Why go green?

We believe that travel shouldn’t have to cost the earth. We are committed to providing the highest standards of service with the least impact on the environment for no extra cost. We have tried to make sense of the science and spin and have considered a number of factors

The Green Taxi Company uses vehicles and fuel specifically chosen to be kinder to the environment without sacrificing on comfort and practicality. We use very modern and low emission cars and offset any carbon we do produce.

Fuel –we have taken account of the Well-to-Wheel approach which considers what fossil fuels are used in the production and refinements of bio diesel and how the fuel is stored and transported.

Cars- when choosing our cars we have taken into account not only the energy used in running the car but also the amount used in production through to destruction.
Standard diesel and petrol engines are being improved all the time but there are limits. Hybrid cars such as the Toyota Prius use a combination of conventional fuel and electric motors, running on clean electric at low speeds and using the braking system to recharge the battery.

Green Facts

  • Britain's emissions of the greenhouse gas carbon dioxide are now higher than they were in 1990, the benchmark year used in government targets to tackle the pollution which is driving climate change. (Source: Guardian Unlimited )
  • All cars on the road today contribute to climate change because their engines burn fuel and therefore produce carbon dioxide (CO2) every time we drive. Yet you can easily reduce these emissions and save money too. By following a few simple tips and suggestions you can reduce your engine's workload, which means it will burn less fuel and produce less CO2. For tips on reducing your carbon emissions, calculating your carbon footprint and other information: www.dft.gov.uk/ActOnCO2/ (source Dept Transport)
  • 2kg of carbon can be saved for every journey under three miles for which we walk and don't use the car. A further 0.81 tons is created by commuting
  • Assuming a journey of three miles undertaken five times a week, the use of a car represents 500kg of energy for the average commuter in a year

How clean is your cab?

Make Model Emissions g/Km
Toyota Prius 104
Skoda Octavia 135
Peugeot 307 140
Honda Accord 145
VW Passat 148
Vauxhall Vectra 157
Ford Mondeo 159

Bio Diesel

The essential element of bio-diesel is oil - animal or vegetable- used or recovered, oil or tallow- the result is a pure diesel fuel compatible with currently manufactured motor vehicle engines.

Practical oils depend on local availability - soybean oil in the USA, rapeseed oil in the UK and most of northern Europe, or perhaps sunflower oil in France - the economics depend on the amount of raw oil produced per hectare.

It requires around 15% energy input to produce the bio-diesel - almost exactly the same as for petro-diesel extraction and refining. The benefits of this sustainable fuel are tremendous - environmentally, for every tonne of bio-diesel used to replace petro-diesel -

  • three tonnes less carbon dioxide are liberated from storage in fossilised hydrocarbons - that's a saving of nearly a tonne of carbon emissions
  • 180gms less sulphur oxides are produced (virtually zero emission)
  • 20kg less nitrous oxides are produced; (although NO2 emissions are increased by 5%)
  • 50kg less carbon monoxide is produced;
  • 40kg less particulates are produced. (Smoke from fossil diesel contains carcinogenic aromatic hydrocarbons - biodiesel emissions do not)

In addition, the fuel is biodegradable - 98% within 21 days (fossil oil - 50%) - and does not have an offensive, choking smell when used.

Ethanol – (ethyl alcohol - grain alcohol )

Is made organically by natural fermentation of carbohydrates and starches contained in sugar beet/cane, potatoes, etc. This has been an additive of petroleum (Agrol, Gasohol or Petrohol) since the 1930s and has been the mainstay of Brazil's transport system for over 20 years.

It only takes three days to ferment a mash, after which the alcohol may be distilled out at reasonably low temperatures, thereby saving on the energy cost of production. It takes over 3 litres of mash to make 1 litre of ethanol, which may then be used for cattle feed.

With no requirement for specialised on-vehicle storage facilities, this makes it a viable transport fuel without the associated pollution, as well as being able to use existing technology and refilling facilities.

Carbon offsetting

Carbon offsetting reduces carbon emissions by investing in renewable energy, energy conservation and planting more trees to absorb more carbon. By using carbon offsetting we can reduce the carbon in the atmosphere by the same amount you’ve added, thus making your journey carbon neutral. To read more about carbon offsetting visit www.carbontrust.co.uk

Other Facts

  • Using a hose to clean your car wastes 300 litres. Use a bucket instead or a waterless car wash (www.aquanought.co.uk). Its biodegradable and non-toxic
  • According to a study by Zurich Insurance, 21% of parents said it was too much hassle to give other children a lift to school despite agreeing being green was extremely important.
  • Cars of about the same size, in the same class, vary greatly in their efficiency. Research from the Society of Motor manufactures and Traders show that if everyone changed to the most efficient car in the same class, emissions from cars would fall by nearly 33%.
  • Transport is the only sector where greenhouse gas emissions are expected to be higher in 2020 that 1990. Despite the popularity of air travel, by 2010, 85% of emissions will still come from road vehicles.
  • Only a fraction of a traditional car fuels is used to move the driver. The vast majority 87% is lost through heat, noise, pollution controls and transmitting power to the wheels. Of the remaining 13% a third overcomes drag, a third resistance and the final third accelerates the car.
  • 22% of all UK emissions come from transport.
  • The last decade was the warmest ever in the UK
  • There are 91 vehicles for every 100 adults in the UK